参数资料
| 型号： | BD9251FV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC PREAMP HBD PIR SENSOR 14-SSOP |
| 标准包装： | 1 |
| 类型： | 前置放大器 |
| 输入类型： | 电压 |
| 输出类型： | 电压 |
| 电流 - 电源： | 300µA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-LSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-SSOP |
| 包装： | 标准包装 |
| 其它名称： | BD9251FV-E2DKR |
Technical Note
5/8
BD9251FV
www.rohm.com
2011.10 - Rev.A
2011 ROHM Co., Ltd. All rights reserved.
●
Block Diagram/Application
D
S
G
C2
47
k
A1P_IN
DRAIN
VDD
D_OU
GND
A2_OUT
A1N_IN
A2N_IN
A1_OUT
65
0k
Voltage
Regulator
Pyroelectric
sensor
T_OU
R1
C4
R2
C5
C6
R3
C7
C3
+
-
350
k
+
-
A2P_DI
-
+
Ｓ
-
+
R4
C8
7.
5k
33
k
33k
7.
5k
REF_OUT COMP_IN
C1
R5
BD9251FV
10
k
AMP1
AMP2
※
Please decide the constant after it confirms it enough examing the characteristic and the condition
of the pyroelectric sensor.
Example of circuit constant：
C1=C2=C3
: 1uF
R1=R3
: 47k
C4=C6
: 6.9uF
R2=R4
: 4.7M
C5=C7
: 15nF
R5
: 220k
C8
: 10uF
●
PIN Description
PIN No.
PIN Name
Function
Remarks
1
GND
Ground
2
NC
3
DRAIN
Power supply for pyroelectric infrared sensor
4
A1P_IN
Sensor input
5
A1N_IN
Amp1 n-input
6
A1_OUT
Amp1 output
7
A2P_DI
Amp2 diode output
8
A2N_IN
Amp2 n-input
9
A2_OUT
Amp2 output, Analog output
10
REF_OUT
Reference voltage (1/2VDD) output
11
COMP_IN
Comparator input
12
D_OUT
Comparator output
13
T_OUT
Moving detection output
14
VDD
Power supply
D
S
G
C2
47k
A1P_IN
DRAIN
VDD
D_OUT
GND
A2_OUT
A1N_IN
A2N_IN
A1_OUT
65
0k
Voltage
Regulator
Pyroelectric
sensor
T_OUT
R1
C4
R2
C5
C6
R3
C7
C3
+
-
35
0k
+
-
A2P_DI
-
+
Ｓ
Ｒ
-
+
R4
C8
7.
5k
33
k
33
k
7.5k
REF_OUT
COMP_IN
C1
R5
BD9251FV
10
k
AMP1
AMP2
※
Please decide the constant after it confirms it enough examing the characteristic and the condition
of the pyroelectric sensor.
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